US2944636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency brake
Assignee: Rockwell-Standard Corp
•
Filing: 1956-07-17
•
Granted: 1960-07-12
•
Expires: 1976-07-17
Abstract
No abstract record available.
Inventors
- 👤 Willard F Rockwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:21
CPC Classifications
B; B60; B60T; B60T1/00; B60T1/02; B60T1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE118456C
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US433414A
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US598766A
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US600459A
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GB138761A
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US1823888A
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US2257610A
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US2637427A
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US2723015A
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FR1061792A
Cited
US2810458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |